Band-saw guide



July 28, 1925.

E. V. PRESTON BAND SAW GUIDE Filed April 3, 1922 Patented July 28, 1925.

UNITED STATES ELTON V'. PRESTON, 0F DETROIT, MICHIGAN.

BAND-'sew GUIDE;

Application filed April 3,

To all who/ml it may concern:

Be it known that I, ELTON V. PRESTON, a citizen of the United States.' residing at Detroit, in thecounty of Wayne and State of Nlichigan, have invented certain new and useful Improvements in Band-Sawv Guides, of which the following is a specification.

This invention has reference to a band saw guide for use when sawing pressed metal for various shapes as in auto-body work, although equally efficient for band saw work of general character. v

The purpose and object of the invention is to provide means: for reducing the right outside measurement of the saw guide to a convenient width for sawing pressed metal and providing for a simple and stable adjustment of the parts.

A further object of the invention is to provide a band saw guide of the character above specified that is simple in construction strong and durable Vand which, it is deemed may be manufactured at a reasonab-ly low cost.

Various other objects and advantages of the invention will become apparent from the continuance of the following descrip.- tion.

In the drawings:

Figure l is a side view of the guide.

Figure 2 is a front viewthereof, and j Figure 3 is a. vertical cross section thereof taken on line 3-3 of Figure l.

This guide consists of a block or body portion 10 of steel or other suitable material having upper and lower threaded holes 11 and 12 respectively running therethru from side to side at right angle to the smooth bore openings indicated at 13 and 14. One face of block 10 is recessed to accommodate a thrust wheel 15 which has its shank or mandrel 16 mounted to turn within sleeve 17 which sleeve is slidable through opening 14 and locked securely in its adjusted position by set screw 18.

Parts 19 and 20 may be welded or otherwise made integral with block 10 and carry removable guide plates 21 held in place by screws 22. Arranged for cooperation with guide plates 21 are other guide plates 23 similarly fastened to an adjusting plate 24. Adjusting plate 24 is provided with threaded bolts 25 upon which it is securely held by jam nut 26. Bolts 25 engage in the openings 11 and 12 of block 10 and provide means for adjusting the guidev -to saws of 1922. Serial No. 549,266.

different gauge, the wheel 15 being moved back or forth according to -the width of saw used at any particular time. To facilitate the lining up of the guide with the saw a goose neck 27 is provided with one endengaged in opening 13 of the guide and its oppositeend inserted in an opening in post 28 which constitutes part of a band saw machine. Adjustable locks screws '29 and 30 respectively bind against .the opposite ends of the goose neck and serve to hold the latter in any angular position between the post and the 'guide7 thereby enabling the guide to' be readily lowered and lined up withl the saw much closer to the -work than has heretofore been found practicable.'

The band saw machineto which the invention is to be applied is of the usual type con'- sisting of an endless saw running on two wheels on separate shafts and the saw guide is positioned and adjusted with respect to the saw blade so that the latter travels vertically betweenthe guide plates 21 and 23 `with its rear edge'bearing against the face of wheel `15. By reason of the rigid upper and lower guide plates engaging opposite sides ofthe saw blade, thelatter is heldin position from side pressure while the wheel 15, against which the rear edge of the saw blades bears, counteracts the pressure from-the front or toothed edge of the saw and prevents it from working back and running off ofthe wheel of the machine. While the saw is in motion the wheel 15 revolves at rapid speed, being actuated by the movement of the saw blade across its face7 and protects the-saw from rubbing against any stationary metal in addition to preventing crystallization of the y saw blade or cracks therein. The provision of the adjusting plateon the right side of the saw guide which is relatively thin and which occupies but a minimum space enables the saw guide to be reduced on the right side to the smallest possible measurement which is consistent with retaining strength and stability. This reduced narrow measurement on outside of the saw guide to the right of the saw allows for much better work when sawing pressed metal since it permits a straight cut on flanged metal instead of having to l saw it at an angle, as is generally required to be done with the saw guides heretofore used.

This saw guide may be readily set up and adjusted to any band saw and when once set in position the parts may be securely locked and held against displacement. When in use it does away `with the excessive width of saw guide on the right side when sawing pressed metal and ena-bles adjustment tobe readily and conveniently niade.

From the 'foregoing' lit is believed that the advantages and novel features of the invention can be readily understood and that fur! "the: upper ,andi-lower ends of the said adther description is unneoessary.

What is Claimed is:` a J1. A band saw guide vCamillases,a mier-i731- lio block having a pair-of smooth bosre openings and a-pair of relatively .upper and lower threaded holes, the latter extending through the `Iblooli from side gto side at right r `angles .to the said smooth "bo-re openingso said -rblook being Vurthel provided with ,a reeess ations-end, `a `:sleevel-rnonnt-ed to turn Within one of :thesaid smooth bore openings, a thrust wheel disposed Within the said recess oit the block and having an linteg-ia-lk :shank fmounted to V,turn with the `sai-d sleenezan adjusting plateoigtastening `mean-s @arr-led by `Said adjusting plate and tlnzeadedly lengaged in the *Said threaded .holes of the block "to permit adjustment of thesaid kplante to ae;- oemmodaite saws of difierent gages, upper ,and lower guide plates carried by ,the ,Said block, npper :and losvergnide plates carried by .the said adjnsting `plate for ,eOperation with the `guide plates ,olf-the :sai-d ,bloc-lg, :a post Ispaced .outwardly from the said bleek, an angulwlly edi-newbie gooseneok liar-ing one @end engaged in the otheremooth bore opening ,of the -bioek and 'its other -@and in*- sented inail )openingin thefsaidjpost, and

adjustable leek Y means at the lopjgwoste 1 ends oi the gooseneclr .sei-.ving to hold `the latter in .any .angular position in 1a plane normal to the cutting planeogf false-saw.` j l 2. A ,saw guide tor ga band saw machine eomprisinga bleek, `an adjusting -pl-a-te on t@ne sdefe the Said bleek andbeng mela- 1,547,eoe j tively thin, guide plates .earried by the said block and the said adjusting 'plate and between Which the band saw is adapted to ass, a thrust Wheel journaled in the front aee of the bloek-and presenting a bearing surface against which the rear edge of the saw is 'adapted to bear, adjusting bolts at justing plate and engaged in threaded openings in the saidbloekandlxjain nuts on the said 'bolts for leaking th, adjusting plate in position thereon, 1

, i A band sawgude stationary and adjustable members between ,which the :saw is adapted to passy the-*said stationarynieni-ber nonsisting of a bleek-haw.

ppwximetslr plane fmnt, ibdek and side `taces mid presenting pair oirelatiyely upper Aand lo-Wer .threaded Vholes VXextending` tb.1mg-h` the block temone side thereof to the other, `-tjhe said adjnstable "member ,consisting of a `-flat jplateldisposedadjaeent one Avof ,the plane sides of, the sagid `body .and

being @instell narrow @WSIS `s@dimi*as to www but a minimnmsna on the @inside .of the slitting plane `oi thessaw, headed adjusting members `having j :senewfshanlgs passing through the said pjlate and Idragaged the thresdellele the 'SflidfbOdy-l means on the .soreW-shanlis; of the said looking members i501" teckna-g the Said ,Plate in posi:- tion thereon, `a thrust `,WheelimountedYin a recess in the frontV face of the body vand preseating j a bearing for theY near edge of the sew, stl-ide `'Plates ixelto the may ,abone andbelowv the `said thrust Wheel .ier engaging the inner side of the sawman'd supplemental guide plates loanrilel by the said flat f plate `for engaging the `outer side ofthew; .j y I-Il` testimony Whereofzlax may Signature- 

